Front of a ceiling tile unit



FIG. 1 is a front elevational view of the front of a ceiling tile unit showing my new design;

FIG. 2 is a right side elevational view of the front of a ceiling tile unit showing my new design; and,

FIG. 3 is a left side elevational view of the front of a ceiling tile unit showing my new design. 

The ornamental design for the front of a ceiling tile unit, as shown. 